Table 1. Baseline characteristics of the 100 volunteers.
| Characteristics | Group 1 | Group 2 | Group 3 | Group 4 | χ2/F | P |
|---|---|---|---|---|---|---|
| Sex (males/females) | 12/13 | 11/14 | 12/13 | 13/12 | 0.321 | 0.956 |
| Age (year) | 23.64±1.73 | 23.80±2.18 | 24.52±2.18 | 24.12±2.32 | 0.845 | 0.473 |
| Height (cm) | 164.80±7.56 | 165.76±7.92 | 165.92±6.73 | 166.92±7.09 | 0.350 | 0.789 |
| Weight (kg) | 56.83±4.61 | 57.78±6.93 | 58.65±5.84 | 59.47±6.39 | 0.891 | 0.449 |
| BMI (kg/m2) | 20.93±1.22 | 20.98±1.42 | 21.27±1.27 | 21.30±1.33 | 0.544 | 0.654 |
| Heart rate (bmp) | 71.68±5.88 | 70.28±5.63 | 72.08±7.13 | 71.00±5.29 | 0.431 | 0.731 |
| Oxyhemoglobin saturation (%) | 96.32±1.35 | 96.16±1.55 | 96.24±1.05 | 96.40±1.19 | 0.159 | 0.924 |
The values of age, height, weight, BMI, heart rate, and oxyhemoglobin saturation are shown as mean ± standard deviation. BMI, body mass index, was calculated as weight/height2.